Improvement in endless chains for animal-power



G. N. PALMER.

Endless Chains for AnmaI-Powshsl. l No 139604 Patentedmne 3,1873.-y

'UNITED' STATES GEORGE N. PALMER, OF GREENE, NEW YORK, ASSIGNOR TO H. A.LYON AND L. E. ST. JOHN, OF SAME PLACE.

IMPROVEMENT IN 4ENDLESS CHAINS FOR ANIMAL-POWER.

Specification forming part of Letters Patent No. l 39,604, dated June 3,1873 5 application lod March 21, 1873.

To all whom it may concern:

Be it known that I, GEORGE N. PALMER, of Greene, iu the county ofGhenango and State of New York, have invented certain new and usefulImprovements Lin Endless Chain for Animal-Power; and I do hereby declarethat the following is a full, clear, and exactidescrip- `tion thereof.reference beinghad to the accompanying drawings and to the letters ofreference marked thereon, which form a part of this specifica-tion.

The nature of my invention consists in the construction and arrangementof an endless chain for animal-powers, as will he hereinafter more fullyset forth. I

1n order to enable others skilled in the art to which my inventionappertains to make and use the same,I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in which--Figure 1 is a side view of my endless chain, with the frame and wheelsover which it moves. Fig. 2 represents one ot' the wheels. Fig. 3 is aperspective view of one of the links; and Fig. 4 is a perspective viewof the end of one of the treads.

G represents a part of the frame, in which, at each end, are Octagonwheels B B, around which the endless cha-in passes. D D arefriction-wheels supporting the chain where the animal is located. Theendless chain is composed ot' links F F and treads A A. Every alternatelink is cast with a pin or projection, a, at each end, while the otheralternate links are cast with a hole at each end, as shown i-n Fig. 3,to receive said pins, thereby connecting the links and forming acontinuous chain ot' any desired length. On the upper side of each linkF is cast a shoulder, b, at each end, so that when the links are puttogether `it forms a knuckle-joint which holds the bridge in a rigid orunyielding position While passing over the friction-wheels D D, therebykeeping the top portion of the bridge in a straight line under theanimals feet, and readilyr yielding to lit the Octagon wheels B. rIheunder sides of the links F aresmooth and straight, corresponding inlength with the straight surfaces of the wheels B at the angles, therebytonming a gripe to carry with the chain the wheels B B .in such a manneras to givev to `said wheels the power required. At `at' a: theknuckle-joints are shown open, and at y y closed. By this arrangement Iam enabled to dispense with two friction-wheels to each tread, also withrunning across from one side to the other, one to each tread,asheretofore used. On each end of the treads A is formed a tcnon, H.This tenon is maldediagonally across the end ot' the tread, and notcorresponding with either surface thereof. By this diagonal position ofthe tenons when they are inserted in the links the tread is held in sucha position as to receive the foot of the animal as if it was moving on alevel plane, in step form, while the power is inclined.

Il`he tread may be strengthened, when it is i made of suicient width fort-wo horses abreast, bv 'attachinga strip, I, of ,wood edgewise Vto theunder side of the tread.

With this chain considerable power is gained, as the number offrctionfwheels reifuired is greatly reduced.

Having thus fully described my `invention,

what I claim as new, and desire to secureby Letters Patent, is

1. The treads A, having formed upon each end the diagonal tenons H, sothat while the power is inclined the upper surfaceot' the treads will beheld in a level position,.sub stantially as and for the purposespecitied.

2. `The links F F having shoulders b b, in combination with the treads Ahaving diagonal tenonsH H, allrconstructed and arrangedV for operationas and for the purpose described. n

In testimony that I` claim the foregoing as my own I aix my signature inpresence'of two witnesses i y GEO. N. PALMER. y

Witnesses: l r 2 JEROME B. WHITE, U. S. LOWE.

PATENT C )EEIGE`

